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Author: Duncan J. Watts
Publisher: Princeton University Press
ISBN: 0691188335
Category : Mathematics
Languages : en
Pages : 279
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Book Description
Everyone knows the small-world phenomenon: soon after meeting a stranger, we are surprised to discover that we have a mutual friend, or we are connected through a short chain of acquaintances. In his book, Duncan Watts uses this intriguing phenomenon--colloquially called "six degrees of separation"--as a prelude to a more general exploration: under what conditions can a small world arise in any kind of network? The networks of this story are everywhere: the brain is a network of neurons; organisations are people networks; the global economy is a network of national economies, which are networks of markets, which are in turn networks of interacting producers and consumers. Food webs, ecosystems, and the Internet can all be represented as networks, as can strategies for solving a problem, topics in a conversation, and even words in a language. Many of these networks, the author claims, will turn out to be small worlds. How do such networks matter? Simply put, local actions can have global consequences, and the relationship between local and global dynamics depends critically on the network's structure. Watts illustrates the subtleties of this relationship using a variety of simple models---the spread of infectious disease through a structured population; the evolution of cooperation in game theory; the computational capacity of cellular automata; and the sychronisation of coupled phase-oscillators. Watts's novel approach is relevant to many problems that deal with network connectivity and complex systems' behaviour in general: How do diseases (or rumours) spread through social networks? How does cooperation evolve in large groups? How do cascading failures propagate through large power grids, or financial systems? What is the most efficient architecture for an organisation, or for a communications network? This fascinating exploration will be fruitful in a remarkable variety of fields, including physics and mathematics, as well as sociology, economics, and biology.
Author: Duncan J. Watts
Publisher: Princeton University Press
ISBN: 0691188335
Category : Mathematics
Languages : en
Pages : 279
Get Book Here
Book Description
Everyone knows the small-world phenomenon: soon after meeting a stranger, we are surprised to discover that we have a mutual friend, or we are connected through a short chain of acquaintances. In his book, Duncan Watts uses this intriguing phenomenon--colloquially called "six degrees of separation"--as a prelude to a more general exploration: under what conditions can a small world arise in any kind of network? The networks of this story are everywhere: the brain is a network of neurons; organisations are people networks; the global economy is a network of national economies, which are networks of markets, which are in turn networks of interacting producers and consumers. Food webs, ecosystems, and the Internet can all be represented as networks, as can strategies for solving a problem, topics in a conversation, and even words in a language. Many of these networks, the author claims, will turn out to be small worlds. How do such networks matter? Simply put, local actions can have global consequences, and the relationship between local and global dynamics depends critically on the network's structure. Watts illustrates the subtleties of this relationship using a variety of simple models---the spread of infectious disease through a structured population; the evolution of cooperation in game theory; the computational capacity of cellular automata; and the sychronisation of coupled phase-oscillators. Watts's novel approach is relevant to many problems that deal with network connectivity and complex systems' behaviour in general: How do diseases (or rumours) spread through social networks? How does cooperation evolve in large groups? How do cascading failures propagate through large power grids, or financial systems? What is the most efficient architecture for an organisation, or for a communications network? This fascinating exploration will be fruitful in a remarkable variety of fields, including physics and mathematics, as well as sociology, economics, and biology.
Author: Chris Smaje
Publisher: Chelsea Green Publishing
ISBN: 1603589023
Category : Business & Economics
Languages : en
Pages : 322
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Book Description
A modern classic of the new agrarianism "Chris Smaje...shows that the choice is clear. Either we have a small farm future, or we face collapse and extinction."—Vandana Shiva "Every young person should read this book."—Richard Heinberg In a groundbreaking debut, farmer and social scientist Chris Smaje argues that organizing society around small-scale farming offers the soundest, sanest and most reasonable response to climate change and other crises of civilisation—and will yield humanity’s best chance at survival. Drawing on a vast range of sources from across a multitude of disciplines, A Small Farm Future analyses the complex forces that make societal change inevitable; explains how low-carbon, locally self-reliant agrarian communities can empower us to successfully confront these changes head on; and explores the pathways for delivering this vision politically. Challenging both conventional wisdom and utopian blueprints, A Small Farm Future offers rigorous original analysis of wicked problems and hidden opportunities in a way that illuminates the path toward functional local economies, effective self-provisioning, agricultural diversity and a shared earth. Perfect for readers of both Wendell Berry and Thomas Piketty, A Small Farm Future is a refreshing, new outlook on a way forward for society—and a vital resource for activists, students, policy makers, and anyone looking to enact change.
Author: Gardner Dozois
Publisher: St. Martin's Griffin
ISBN: 1429905697
Category : Fiction
Languages : en
Pages : 685
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Book Description
The thirty-two stories in this collection imaginatively take us far across the universe, into the very core of our beings, to the realm of the gods, and the moment just after now. Included here are the works of masters of the form and of bright new talents, including: John Barnes, Elizabeth Bear, Damien Broderick, Karl Bunker, Paul Cornell, Albert E. Cowdrey, Ian Creasey, Steven Gould, Dominic Green, Nicola Griffith, Alexander Irvine, John Kessel, Ted Kosmatka, Nancy Kress, Jay Lake, Rand B. Lee, Paul McAuley, Ian McDonald, Maureen F. McHugh, Sarah Monette, Michael Poore, Robert Reed, Adam Roberts, Chris Roberson, Mary Rosenblum, Geoff Ryman, Vandana Singh, Bruce Sterling, Lavie Tidhar, James Van Pelt, Jo Walton, Peter Watts, Robert Charles Wilson, and John C. Wright. Supplementing the stories are the editor's insightful summation of the year's events and a lengthy list of honorable mentions, making this book both a valuable resource and the single best place in the universe to find stories that stir the imagination, and the heart.
Author: Clifford J. Cunningham
Publisher: Springer
ISBN: 331958118X
Category : Science
Languages : en
Pages : 404
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Book Description
This book assesses the origin of asteroids by analyzing the discovery of Vesta in 1807. Wilhelm Olbers, who discovered Vesta, suggested that the asteroids were the result of a primordial planet’s explosion. Cunningham studies that idea in detail through the writings of Sir David Brewster in Scotland, the era's most prolific writer about the asteroids. He also examines the link between meteorites and asteroids, revealing a synergy between Ernst Chladni, Romantic symbolism, and the music of the spheres. Vesta was a lightning rod for controversy throughout the nineteenth century with observers arguing over its size and color, and the astounding notion that it was self-luminous. It was also a major force for change, as new methods in the field of celestial mechanics were developed to study the orbital perturbations it is subject to. A large selection of private correspondence and scientific papers complete the first comprehensive historical study of Vesta ever published. With a synoptic look at the four asteroids, Ceres, Pallas, Juno and Vesta, Cunningham provides a valuable resource on asteroid origins and explains how they were integrated into the newly revealed solar system of the early nineteenth century.
Author: Nathalie A. Cabrol
Publisher: Simon and Schuster
ISBN: 1668046687
Category : Science
Languages : en
Pages : 320
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Book Description
One of the world’s leading astrobiologists takes us on an awe-inspiring journey across the cosmos to investigate some of humanity’s most profound questions: Are we alone in the universe? And, how did life on Earth begin? We are in a golden age in astronomy, living on the cusp of breakthroughs that will revolutionize our understanding of our place in the cosmos in. Yet a profound question remains: Are we alone in the universe? We have never been closer to answering this question. In The Secret Life of the Universe, astrobiologist and the director of the Carl Sagan Center at the SETI Institute Nathalie A. Cabrol takes us to the frontiers of the search for life. The book’s odyssey begins by exploring how life began on Earth in order to understand what’s necessary for its existence elsewhere. What role did our Moon play? And could life on Mars have seeded life on Earth? Cabrol continues this dazzling interplanetary tour, illuminating the likeliest places for life in our neighborhood: While Mars and the icy moons of Jupiter and Saturn are among the top contenders, recent missions are redefining the limits of habitability to include unexpected worlds. Finally, we seek life beyond our Solar System, becoming witness to a revolution in the night sky: the realization that there are as many planets as stars in our galaxy. With more than 300 million exoplanets in the habitable zone of their stars in the Milky Way alone, to think we are alone, or the only advanced intelligent civilization, may be little more than nonsense. The Secret Life of the Universe is a comprehensive and authoritative guide to the search for life. This is an exhilarating journey for anyone who has ever looked up at the stars and wondered what might be out there.
Author: Scott Berks
Publisher: Lulu.com
ISBN: 1678027758
Category : Biography & Autobiography
Languages : en
Pages : 460
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Book Description
The late 1990's was a weird & wild time for the Internet. It was a time before Google, social media, smart phones and blogging. In this 2-volume series, follow Scott, along with his dog, Kegs on an almost 5-year journey through his mid-twenties. Via his (almost) daily journal posts, we tag along on this intimate & personal journey as he experiences friends and girlfriends that come and go, family members dying, and his career slowly taking shape. He shares his everyday experiences, occasional stories from his childhood and his thoughts on current events during that period.
Author: Bob Kern
Publisher: Christian Faith Publishing, Inc.
ISBN: 1098087631
Category : Fiction
Languages : en
Pages : 90
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Book Description
43 Suppose that you are faced with one calamity after another and your faith is being tested every day. In addition, suppose that the world has become almost unlivable with catastrophes, plagues, wars, famines, natural disasters, civil unrest, violence, political strife, abortions, drug abuse, child abuse, and suicides out of control. On top of that, you are a single female living in New York City, reporting these events every night on the local news. You meet a man from the United States Army, get married, and give birth to a unique and gifted pair of twins, a boy and a girl, who can communicate with God through the Holy Spirit. This is the story of a family facing the future and trying to let go of the past while battling the demons that not only attempt to divide them but also try to prevent them from carrying out a mission to reverse the course of history. The first of two books sending out a message which could spare mankind a horrendous ending. The Perfect Vision is a story of the endurance of the human spirit and the innocence of childhood which becomes the catalyst for renewal and rebirth. The journey of the Champion family takes you from New York City to the birthplace of Jesus. This historical fiction narrative reminds us of our past and present conflicts and prepares us to face the coming days with faith and conviction. What is God's perfect vision for mankind and who does he trust to share that vision and turn it into a reality before it is too late? The world is at the brink of civilization becoming instinct. Could two young children with very special instructions and blessings save society from a fatalistic outcome? This book is not for the faint of heart. Whether you are a Christian or a nonbeliever, you will connect on a deep level with the characters that espouse virtue and bravery in a world of chaos and confusion.
Author: Thomas F. Tartaron
Publisher: Cambridge University Press
ISBN: 1107067138
Category : Social Science
Languages : en
Pages : 361
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Book Description
In this book, Thomas F. Tartaron presents a new and original reassessment of the maritime world of the Mycenaean Greeks of the Late Bronze Age. By all accounts a seafaring people, they enjoyed maritime connections with peoples as distant as Egypt and Sicily. These long-distance relations have been celebrated and much studied; by contrast, the vibrant worlds of local maritime interaction and exploitation of the sea have been virtually ignored. Dr Tartaron argues that local maritime networks, in the form of 'coastscapes' and 'small worlds', are far more representative of the true fabric of Mycenaean life. He offers a complete template of conceptual and methodological tools for recovering small worlds and the communities that inhabited them. Combining archaeological, geoarchaeological and anthropological approaches with ancient texts and network theory, he demonstrates the application of this scheme in several case studies. This book presents new perspectives and challenges for all archaeologists with interests in maritime connectivity.
Author: C.R. Kitchin
Publisher: CRC Press
ISBN: 1498704948
Category : Science
Languages : en
Pages : 374
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Book Description
Interest in and knowledge of the techniques utilised to investigate our solar system has been growing rapidly for decades and has now reached a stage of maturity. Therefore, the time has now arrived for a book that provides a cohesive and coherent account of how we have obtained our present knowledge of solar system objects, not including the Sun. Remote and Robotic Investigations of the Solar System covers all aspects of solar system observations: the instruments, their theory, and their practical use both on Earth and in space. It explores the state-of-the-art telescopes, cameras, spacecraft and instruments used to analyse the interiors, surfaces, atmospheres and radiation belts of solar system objects, in addition to radio waves, gamma rays, cosmic rays and neutrinos. This book would be ideal for university students undertaking physical science subjects and professionals working in the field, in addition to amateur astronomers and anyone interested in learning more about our local astronomical neighbours.
Author: Michael Moltenbrey
Publisher: Springer
ISBN: 3319230034
Category : Science
Languages : en
Pages : 275
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Book Description
This book gives a detailed introduction to the thousands and thousands of smaller bodies in the solar system. Written for interested laymen, amateur astronomers and students it describes the nature and origin of asteroids, dwarf planets and comets, and gives detailed information about their role in the solar system. The author nicely reviews the history of small-world-exploration and describes past, current and future space craft missions studying small worlds, and presents their results. Readers will learn that small solar system worlds have a dramatically different nature and appearance than the planets. Even though research activity on small worlds has increased in the recent past many of their properties are still in the dark and need further research.
